Provider: Ingenta Connect
Database: Ingenta Connect
Content: application/x-research-info-systems
TY - ABST
AU - Walski, Thomas
AU - Whitman, Brian
AU - Kelly, Brandon
AU - Leaman, Mike
AU - Loughran, Danny
TI - New Findings in Estimating Flow Rates Through Overflowing Manhole Covers
JO - Proceedings of the Water Environment Federation
PY - 2008-01-01T00:00:00///
VL - 2008
IS - 5
SP - 851
EP - 874
N2 - When sewers overflow through manhole covers, the flow rate of the overflow is expected to depend, to some extent, on the head loss through the partly open manhole cover. In this study, the flow rate and head loss was measured through several manhole covers with different weights and
number of holes to determine that relationship between head loss and flow. While it is common to model an overflowing manhole as a weir or orifice, this experimental study found that this approximation may not be very accurate. Instead, it was shown that once sufficient head is provided to
marginally lift the cover from the casting rim, flows can vary dramatically with only a minor change in head. Experimental results are provided in this paper along with some discussion on the implications for hydraulic models.
UR - http://www.ingentaconnect.com/content/wef/wefproc/2008/00002008/00000005/art00059
M3 - doi:10.2175/193864708788812839
UR - https://doi.org/10.2175/193864708788812839
ER -